It's cheaper to not do it and they likely don't even think about this stuff anymore (if they ever did). They roll with their own skeleton crew that took years to figure out VRR and 1440p support.I don't understand why companies like PlayStation don't contract guys like these help them to find tune their craft and even give them a little skeleton crew to work on stuff like this for them.
Dudes in their spare time hacking PS5's to run games at 60fps, creating PS3 emulators, creating VR mods for Sony games on PC, etc.